1960s American, 17mm X 9mm of fiery pear-drop shaped opal set in 18ct gold with Pave set and Baguette cut diamonds surrounding. A total head size of 23.5mm X 19.5mm. A total of 0.6cts for the baguette cut diamonds (20 stones) and a total of 0.6cts for the pave set diamonds (20 stones). Currently has a finger size of S(GB) / 9.25(US).